CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
9.8%
There’s a use-after-free vulnerability in grub_cmd_chainloader() function; The chainloader command is used to boot up operating systems that doesn’t support multiboot and do not have direct support from GRUB2. When executing chainloader more than once a use-after-free vulnerability is triggered. If an attacker can control the GRUB2’s memory allocation pattern sensitive data may be exposed and arbitrary code execution can be achieved.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 12 | all | grub2 | < 2.06-3 | grub2_2.06-3_all.deb |
Debian | 11 | all | grub2 | < 2.06-3~deb11u1 | grub2_2.06-3~deb11u1_all.deb |
Debian | 999 | all | grub2 | < 2.06-3 | grub2_2.06-3_all.deb |
Debian | 13 | all | grub2 | < 2.06-3 | grub2_2.06-3_all.deb |